Automatic feed rivet heater



Novo 29, 1927.

G. A. E. JONES AUTOMATIC FEED RIVET HEATER Filed May 20, 1921 3Sheets-Sheet l Nov. 29, 1927. 1,650,943

` G. A. E. JONES AUTOMATIC FEED RIVET HEATER Filed May 2o, 1921 ssheets-sheet 2 Nav. 29, 1927.

1,650,943 G. A. E. JONES AUTOMATIC FEED RIVET HEATER Filed May 20. 19213 Sheets-Sheet 3 Patented 29, ll. i i

tl EPATENT GFFICE.

l-RGE A. JUNL, OF NEW LGNGN, 'NNECTIUUT, ASSIG-NOBJ OF ONE-THIRD TOLBERT B. HART AIM@ ONE-THIRD TG HAROLD E. STARR, BOTH OF LONDON,

CNNECTC'UT.

A'UTQMATEG FEED RVE'I HEATER.

Application filed 'May 20, 192i. Serial No. iV/1,288.

My invention relates to a new and imnumber, as shown; the tour outerslots openproved method oit', and apparatus tor, use ing outward at theperiphery, and' the four 55 m metal working operations, in which, lowlike inner .slots opening inward, into the voltage, high amperageelectric currents are orifices' of the central open spider-hub porpassedthrough the work, such as bolts, tion oil such carricreplate; a'guiding-memrivets or other like articles or stock, and ber for each otsuch carrier-plates lior pre through the inherent resistances of suchventing the rivets when once inserted in such bolts, etc., raise them tothe desired worlcarrienslots, from passing out of said slots ingplasticity tor forming, Ytorging rivetuntil they are automaticallygravitationally lo heading in situ etc., or other desiredmanipudischarged from the open ends thereof alter lation at hightemperatures, and the same is having been heated tothe necessary temanimprovement upon my copending ap perature, 'for the working required bythe 65 plication tor Letters Patent ot the United autoniatic action etthe guiding-member; States, Seria-l No. 431,999, tiled Decembermechanism for intermittently rotating the 15 20, 1920, and as in suchtiled application, in carrier-plate or plates with a dwell between sofar as it concerns the apparatus, although each movement; a heatingelectrode or plunot limited to such use, relates more particurality otelectrodes beneath each carrierlarly to electric-forges, or similarapparatus plate; means for positionally vertically adt'or passing anelectric current ol high ain- `pisting the electrodes for rivets ofdilierent 2o perage and heating quality, through the lengths; anelectric supply usually but not rivets, or other stock, tor making thesame necessarily a transformer, ior producing a plastic for permanentlyrivet-heading the direct or intermittent straight heating cursame inposition, in boilers, buildings, rent ot the required high-amperage;derived bridges, etc. trom a suitable alternating current supply;

"-5 Broadly, the objects ot my invention as an electro-conductivebridge-inember situto the apparatus which l have devised 'tor ated aboveeach ot the carrier-plates, against carrying out my said method, are toprovide which, the head or upper end portion of the an automaticapparatus, preferably and rivets or other articles will be forced intousually portable, being mounted on wheels, contact, upon the raisingupward into con- Bo or casters, as shown in Fig. G, by the use oittacting position ot the movable lower elecwhich, a greater number outrivets can, by trodes, in such manner that the heating-curmy new method,be heated in a given time, rent will usually, but not necessarily in alland automatically ejected therefrom when at cases, pass in seriesthrough one rivet, then the right heat; which l consider to be the thebridge-nieinber, then the other rivet caras very crux and salientpointo't myV invenried by the Sain@ Carrierplate and Complet@ tion, orinventions, as hereinafter more parthe heating circuit; means ermechanism ticularly pointed out in the claims thus for intermittentlyraising and lowering the 90 lnfinging` about lgreater and quickerheating lower reciprocating electrode or electrodes, ot rivets, etc.than has ever hitherto been with a dwell between such movements sut- 4e1irnon'n, and this at less cost. licient to bring the rivet to theproper heat rlo such ends, my said improved electric ttor working; and aconstantly rotating heating apparatus comprises a movable carprime-moverusually an electric motor, actu 95 Vier, usually. but not necessarily otthe revating` such i'i'iovlug mechanism, the times of oluble cor r-platetorni shown, and de the ii'otation and the beating dwell being con*scribed herein, or any desired plural miur trolled by varying the speedot the primeber ot such vcarrier-platcs '(or any other mover. i suitableAterm et movingl carrier) such car- Such apparatus of a simple and cheaprie"-plale or plaies being provided with a 'form ol' construction,easily operated, highly plurality el stockH airying slots open at oneefficient and ot long life. Other objects ot 5U end, tor the ejerY n etthe stock when heatthe invention will appear as the descriptiei'i ed,which bolt slots, in the circular ds; and while herein minute details ite shown and described c :mid inme and preferably eigbt .in

l not limited to like t.

tions, combinations or positioning of the various elements there-ot'shown; as many changes mayY he made therein, both in constructioi'i,combination and arrangement, without in any manner departing from thescope ot' my invention. which is tully shown and described in thefollowing specification, of which the aecomparij/ing` drawings form a,part, wherein similar letters or numerals of reference designate like orequivalent parts wherever 'tound through the several views, and inwhich:

Figure l is a front persgective view in elevation ot my said improvedelectric l'ieatingdevice `for heating rivets, etc.

Fig. 2 is a view in detail on an enlarged scale, lookingy trom the topoi: Fig. .loit the mechanism tor interu'iittently rotating` each of therotating carrier-plates by a step by step movement. with. a heating`dwell hel tween. the movements.

Fig. S is a like trout detail view ot portion ot the mech; m shown in'l. and 4. taken in section on the line 3-3 ot Fig'. 41, sl'iowing thelett-hand carrier-plate. with its two lower electrodes in the lower anddepressed and rivetvreleasiney position; and in dotted lines showing'the two already heated rivets released and .fl-ravitationally tolling;trom the carrier-plate7 into any suit* able receptacle, not shown.

Fig'. et is a top-plan oi" the device.

Fig. 5 is a top-plan view of the two curved guide members situatedimmediately below the two carrier-plates lool-:ine` downward as to Fig'.l. and trom helov, looking` upward in Fig. l.

Fig. 5 is a side view in perfuiective and ele vation, partially insection, o t the complete device looking' toward the lett ot Figs. l and1lin tl'ie direction ot' the arrows.

Fie'. i' top-plan detail view ot u portion et a` moditied torni otcerrierqglate, showing means tor ifarvinaY the width of the slots toadapt the same for use in holding` rivets ot' different diameters.

Fig. S is a diagrammatic View ot the bridgingelectrtrcontact members,movableelect-rodes, transformers. primary current generator. electricwiring'. prime-mover mon tor, etc., in a machine ot the two carrierplateform of construction shown herein.` with rivets in process ot heating;and

Fig. 9 is a front exterior view in elevation on a reduced scale, oit theparticular type et variabletransformer, which l prefer to use in suchdevice, as shown in the diagrammatic View, Fig. 8.

As shown in the drawing The main tramer supporting portion of my saidelectric rivet heating apparatus eoir sists ot a main-trame F, in thisparticular case usually and preferably built. up of four upright rolledsteel corner members l, usually or L-angle-har shape in cross section;like steel top side har-members 2; intermediate members 2. and 2; andtrent inter rediatc members 3 and 55': the bottom memher 3. and top andbottom horizontal like members -i and 5, which are usually of the formsin cross section indicated. sfo-:ne being; llat plates, and others olisubstantially Lehaped form in cross-section as shown.

At or adjacent, to the center ot such main iframe, extending across, andrigidly secured at either end to the intermediate side pieces or members2. are two channel-bars indicated hy the letters U and U, and supportingthe motor Iii, which is rigidly secured thereto bj; bolts As shown iuFig'. l. the trout bar 3 is provided adjacent to either end with twoouter vertical, journal boxes t'. in which are rotating'lv mounted the,shafts 22, 22. upon the upper end., which are rigidly secured the rivetcarricr-ilatcs C, C. between which are four like journal-bormes 7; ineach of which are rotatively and reciprocatiugly mounted the verticulupper portions S of the lower vertically n'iovable electrode shafl'tsS): the lower portions l0 ot which are connected with the upper portion8 by a turn-buckle O by the manipulation oit which each of the saidelectroueeshalits may be lengthened or shortened, to operate upon bolts,rivets, etc., ot various lengths; and such turnduicklc shafts aresuliiijiortcd at the lower ends iu step journal-boxes il, so as to berevohihle and vertically reciprocatahle therein.

And secured within the L-shaped upright corner-members l otl the trameare horizon.- tal journal-botes l2 (Figur. l) in which arc revoluhlymounted the jourirds ot the camshai't '13, having; mounted thereon aworn screw gcar-wheel 14. actuated by the wru1- screw gear 1.5 mountedupon the shalt iti. czirrying o spur `gear-wheel 'fr'. meshing with thesmaller spur geanpiuion itl. mounted upon the shaft lti, ot' the primemover or motor M.

Rigidly secured to the canwhr; vertical line with the two o n. lowerjoiu'uahboxes G and l". is a mutilated spiral grearovheel orcen'i-n'ieuiher :20 heviugj a huh 20 secured in auf.' desired por ay setscrew 20 iiu'ovided with a who mutilated spiral screw meiuhe meshing`therewith and upon the supporting); op Q2 the case may be. carril perends respectivelvn the magazines or stock terrier-)3121 constituting` arotatabie .vcrlt h' is the coactin ioi-.i'tiootlied wheel 23 hai' theYfour screw-threads and h v th' that upon the will he seen cam shaft lf3each oi" said lli) lli)

rotation of the cam shaft 13, with a dwell between each ot suchmovements, ot sui'hcient time to heat the two rivets at the timeineluded in the high amperage electric heart ing-circuit or circuits, tothe enact plastic working temperature required; and no more; wherebyover-heating, burning, scae formation etc., ot such rivets absolutelyprevented.

And it will be also seen that it one ot the members 2O has its tooth 21at the :forward side, while the other has its lille member at the rear,while one carrier-plate in the dwell, the other in rotative 'feeding inotion, while if both are inlike position, as both teeth 2l to the lfrontand rear both are Simultaneously in heat or dwell.

Located immediately below the cam-shatt 1S, andsecured rigidly upon thelower portion l oi each ot the turirbucltle shafts, is a peripherallyslotted collar And termed integral with, or rigidly secured to, the.front portion ot the channehbar il, which together with the lilreshorter l,-shaped channel-bar U', Fig. it, supports the prinioniover ormotor lil, are the upwardly extending bracket-inen'ibers 3l, and 31,pivotally secured within which by the pivot nut-bolts 32, and 32, arethe rear ends of the electrode depressing levers 33, (Figs. l and 6) gsuch levers 3B and 83 cach carrying at their torward ends, (as shown inFigs. l, t and 6) the double electrode-shaft depressing 'forks Sil; theinwardly extending pins 2T, ot which extend inward into the peripheralslot 2T, of the adjacent registering littcollar 25, rigidly secured tothe electrode turn-buckle shaft l0; between which collars 25, and thelower journal boxes ll, in which such turn-buckle shafts are verticallyand reciprocally mounted, are interposed coilsprings 351, which normallytorce such twotwin electrodes and 30 simultaneously up 'arch against thelower ends ot the tworivets in the particular carrier-plate immediatelyabove such electrodes E30 or 30, at the moment, so as to bring the headsot such rivets into contact with the lower surface oit theelectrwconductive bridge-member B or B` accordingly as such rivets arecarried by the carriereplate C or C".

Rigidly secured upon the cani shaft 13, one between the two turnfhuclfleshatts l0 ot the twin'carrying electrodes 30; and the other in thesaine. position between the like shafts supiliorting the electrodes 30',are two cams 36 and 36 respectively, the peripheral surfaces ot whichare in constant contact with a 'friction roller 37, rotating upon astud-pin mounted upon a shaft 38, the ends which are supported in theopposing faces ot the double tork of the llever or 33', the case may be,(Fig. ft) and it will be seen that when the depressing outer largerdiametereol peripheral portion 39, ot such cam pr seing lever 33, 33',as the case may be, (Fig. 6) such lever will be Yforced down- "ward insuch manner as to depress such double forked-lever, so to carrysimultaneously downward tue tno twin turnbuclle shafts, with which 3T isconnected into the' rivet relVeasing-iosition shown in lli@ t3; but thatwhen the lesser diametered .ion 39 (Figmti), ot' such cam 36, or 36', isin Contact with 2li, (Fig. o) g that the resiliency et the coil springs35, by their action upc-n the collars 25, will torce the turn-buckleshafts and the twin electrodes 30, or 30', carried 'thereon upward insuch manner as to litt the registering rivets or other stock in 'thecarrier-slots into contact with the coi'iductive briegeunemberimmediately above; thus closiiig the heating circuit thrusuchregistering rivets. And `the path ot the current .is usually ot what isknown as 'andeii'i-series, tlowingv first -trom the plus polenioving-electrode through the rivet to the confluctire-britige-member,trom the bridge "eniher through tlie'othcr rivet, to the otn twiniii-oving-electrode, thence to the minus pole ot the electric heatingsupply, all shown in diagram in Fig. 8, by the arrows and plus and minussigns.

and it is also evident that by having the conductive bi'icl,feiiieiiibei', or members, connected to, say the .minus pole ot theheating current si'ipply, or vice versa, as by 42', in dotted lines, 6,while the two coacting movable electrodes are connected with theopposite er plus pole, or vice versa, as shown at 422 in dotted lines,two rivets, etc., can. be heated in like manner, without beinglconnected in tainlem-series; the path of the heating current beingv otthe typo oit what is known as in. parallel series.

rlfhat is, troni each ot the twin plus poles (or vice versa) ot each otthe electrodes 30, or 30', the pluscurrent passes through its individualrivet or stock-piece to the particular conductire-bridgc-nieinhersituated above such electrode, and thence to the minus pole oftheelectric heating current supply. find it will he seen that by using thisconductive circuit in parallel series, and by melting the carrierwhether et the rotating vtorni showin or ol" any other suitablemoriiuitorni, which will carry and bring siruultaueously into positionbetween the plus and minus electrodes, a plurality ol' riif'ets or otherstock` that a single rivet or stool; piece, or an almost innumerablenumber ot such rivets, ctc.` may be heated and deliveredsiinultaneously.

And. it is evident, although i have not deemed it essential to show thesaine in the drawing herein, that the circular carriervplate in the formhere shown could easily be made with a second, or any desired ninnber ofspiders, having delivery orifices connected with rivet holding` slots,such spider or spiders being` situater, soncentrically eX- terior to thesingle central-spider shovn in Figs. l and 3, whereby 'tl could belealed und delivered sinniltaneously. And it is also evident that Withthe parallel 'f1 s type oi heating;` current a single bridge-iiieinlier,could be used V.tor the lower movable as well as the upper immovablebridge-member or electrode.

It will :lso be 'that the particular form of construction shown in thedrawings, will be especially valuable tor gene Eal conractors, Wherethere is :llreeuentlv need for simultaneous delivery oit several rivetsof different dianiete consequently needing variation olf the diametersor the carryingH slots; and also dill amper:` j'es of heat,- ingcurrent; and it also evieent that by the use oit my said maehiie viiLtivo carrierplatcs With adjustable rivet slots, and like electrodes,each carried l 'in a 'able and reciprocat-inrg` turi -bucl'i sli whencoua'i t, pled with the universally 'rai singole primary coil, anddouble variable secondary coil transformer as shown, as many as fourrivets or pieces oit the same size stock, or or different diameters andlengths, may be cle trically heater and delivered simultaneously or onlya single rivet can be heated and delivered.

lVhile tivo transformers serving;l both of electrodes and 30 each oitwhich transfo 'mers is variable as to its prin'iary, but not as to itssecondary, may be used, the cost oit installation7 space, weight andcost et current used are each reduced to a minin'ium by the use oit` theparticular' type oi; universally variable transformer sho vn in Figs. 23and 9; wherein the transformer inducing magrnetic-meniber is et' theii'orm shown in Fig'. i), with two erterior and one interior neu1- berin a closed niagrnetic circuit. li such device the priniary coil Zl() isconcentrically mounted upon the central olf the :nag:lnetic member,While the secondary coils A and l, ilanlringl the sanie on oppositesides are each mounted upon one olf the side legis ot' such magneticmember. rind as in this type ot' transl'ornier alreadv in use and on theinarlrel, both prima and secondary currents 'ier each two electrodesil() and 30', may be separately Widely varied, by the use oit' only onetransformer, the hea i. reu-l. passing' through the electrode conductivebridge-member ll or lil', maj,r each lie made vto deliver currents oildillferent voilages, or an'ioerag or both, as may be required, merely bysetting;I the n'iniary-eoil switch member l), in such position that itwill give the required greatest heating current to one set otelectrodes, ane at the same time give the requisite lesser heating; curnsecondary coil B, n' at the moment parsing` through L.he primary centralA. C. current coil K (which nay be Widely varied by proper positioningor" the Cut-out suitcli-nieii-iber O (Fig. et such `elle primary Coil K,Figs. 8 and a.) that the amper-age delivered by the secondary coil A,when its circuit is closed through the bringing ol the rivet-heads intoontaet with the elcctro-eonductiJe bridge-- bei' l', will he et justone-halt` the amperage, l.nd consequently of' just one-halt therivetdieating power, oi the eu'rent delivered by the secondary coil B.

'lui l connections, and a eontrolling,r

taaie rheosrift, and s vitch.. are oit course provided Yl'or theprime-mover motor nl, but they being ol" well known torni I have notdeemed it :enliial to show the same in the drawings. lier have lf deemedit necessary to show (Fig. (S) more than the hand-levers on theswitch-board ol" the primary, and two secondary coils ol the universallyvariable trans ormer T, such hand-levers beingl each po ioned to accordwith the circuits as sh rin in diagram in Fig. S.

The electrodes 3() and 30', are prete lably 'formed ol` cold-rolledeleearolytio pure copper; and are made oiE suiiieient mass as not to behighly heated th1'ou 'liout by the passage ol the current. lllach pairot movable electrodes 30 and 3 are each separately mounted on top of oneoi the turn-buckle vertically reciprocating shafts 9; are insulated fromsuch sha'lt by an insulating block Li0; and are connected one with theplus, and, the other with the minus pole of one ot the secondary coilsIol the trans'lim'mer by tlex''ile resilient. conductiveribboli-.f-:trips #il and 4l. usually ol 'opper, brass, etc., while theelec!ro-couductivc bridge members B and ll are suliported by likethicker, less resilient supportinebars Ll2 (Fig. 6) bolted to the frame,so to be practically immovable, and are Yinsulated from the supportingbars a2, by insulation eti/l; in such manner that when either pair oitthe reciliirocating turn-lnielrle shafts supporting' the electrodes 3l),or 80. are raised up by the action of the prings 35, the two rivets themoment ituated underneath such electro-conduc- .j bridge memlier B- orB', will have the s thereinc brought into Contact with. such iilperposedbridge-member, so as to make a ive closed heating-circuit in series thrueach pair of rivets by way oi: such bridge-member, all as clearlyidicated in the diagram Fig. 8.

lvlounted upon the interniittently rotated carriei-shatts 22 and Q2" arethe carrierpiates C md C, constituting,` the rivet holding magra es,which are usually and prei erably ot the circula;l central openspiderlilie t'orm shown. `While the number of rivet-carrying slots ot.such carrier or support shown in the drawing` total eight in number;tour upon the periphery with the open ends outward; and four at theperiphery ot the centralspider, with open ends delivering the heatedrivets inward to the inA terstices or oriiices ot the tour-spokedcentral spider, it is ot course evident that the number oit such slotsmay be increased or diminished without in any manner departing` 'fromthe scope oit my invention.

Secured at either end to the iront corner standards o'i the main-trameis an l.bar 44- located and lyi'eieiiibly immediately below and adjacentto the rearward edges of the rotating'v carrier-plates C and C', andsecured to such bar lll usually by a screw or screws 4.4; is a rivetgiiide member G usually and preferably ot' the single integral-piecedouble inner and outer volute whorl coil form and shape shown in detailin the top-plan View thereof, find it will be seen (Figs. 25, l and-tnat when the rivets are dropped by hand into the carrier-plate Lili,when they are in the extreme i'orward feeding' position indicated at46', Figs. l, Ll; and 5, their lower ends will project slightly belowthe guide member (l with the outer side oit the rivets in the outer ieedslots in con tact vritli the inner concave face ot the outer whorl orvolute ot the guide member G, and with the inner side of the rivets inthe ts in contact with the outer l side ot the inner smaller diaineteredor volute oi such guide member G,

inne-r spitten @Ol l V', wb ori :iso that th y vill be retained in suchopen end slt as the carrier-plates are rotated :is .indicated by thearrows in Figs. Ll and 5, as the carrier shafts 22 and 22 areintermittently rotated step by step the left hand one 22, clockwise, andthe right hand one 22 anti-clock-wise, as indicated by the arrows in 4and 5, until they register with anc are located between eitherthe'electro-conducti ve bridge member B orB, and the electrodes 30 or30, the case may be; bei ng positioned ai' shown in dotted lines inFigs. fl and 5, as indicated at H; and as soon the two rivets are soplaced the. circuit is closed by the automatic lifting up ot theelectrodes as shown in Fig. l, so as to brimr the headed upper ends oithe rivets "ntowc tact with bridge member B or l5, as the case may be.Thus it will be seen that the worlr holdiiw magazines C and C/ ftoadvancc intervals relative to the reciprocation of the electrodes 30and 30 so that the rivets supported in such magaines will advanced bysuch magazines C and C into heating position between the electrodes Band 30, 3U, or B and 30', 30", and zitter heating, again advance by saidmagaziin-xs out of ."ieatirgl -position. ln trom live to six seconds otelectric contact, the rivet or rivets Yin circuit will have reachedworking heat, and as soon as the carrierplate begins its next succeedingintermittent step movement, the hot rivets will both be brought intocontact with the closed looped portion ot the guide member Gr, as shownat t?, and di", or Fig. 5; `and as the carrier-plate continues torevolve Y will be iorced along the outer peripheral carrierslot, andil?" along` the inner spider-slot and when in the position indicated bycrosses surrounded by dotted lines 1li/'1 and 472, being wholly out oftheir respective slots, they will tall together by gravity into anysuitable receptacle (not shown) situated in pro position beneath, thehot rivets, being, ejected, and in the act of dropping,` being indicatedin 'the dotted lines in Figs. 3 and 5, the outer rivet by lil and theinner by 472.

By n'iy said new and improved method, and by the use oit my said new andimproved antoniatic rivet heating machine and apparatus heretoforedescribed, rivets of 34 X Eil/j length can be delivered at the properheat ilior handwiveting at the rate of ten per minute; and ifor Abullriveting at the rate oic twelve per minute, as l have proven by actualoperation oli such machine or apparatus.

illhile l have shown herein two intermittently rotatino peripherally andinteriorly sL ider-lile, slottec carrier-plates, each heating two rivetsat a time as the two carrierplates are intermittently rotated step bystep with a suihcient dwell between such movements to bring,` the rivetsto the proper working heat, l do not intend to limit myselt to the exactform of carrier or other parts thereo't shown and described herein; but,believing that l am the iirst person to conceive of and practicallyembody and put into actual working` use such an automatic electricheating device, l claim as my invention, both as to method andapparatus, the broad principle of a moving carrier for rivets, etc., asshown inthe machine her-ein described, whereby and wherein a pluralityof rivets or other stock, without human assistance, save for thefeeding` oi the rivetsl to suoli carrier, are automatically andintermittently singly, or in any desired plurality,

brought into position, and in contact with a suitable electrode orelectrodes with a sufricient dwell, while included in the closed elecntric heatingl circuit, to bring,` such rivets or other stoclr to betreated to proper plasticity by an electric heating` current, whichrivets or stock as soon as heated to the proper point, will beautoinatically ejected Yfrom such carrier into a suitable receptacleirrespective ol the particular form shown herein, as I consider anymethod or apparatus performing` the same 'functions in substantially thesame way the method and machine herein described and claimed, to beclearly within the scope and purview ot' the broad claims hereof,wherefore I consider that in its broad scope my invention or inventionscover and include, any method or machine ot the broadest class or kinddescribed, including any and all 'forms et moving carriers, which willcarry a plurality ot rivets or other like articles, and which willautomatically, singly in sequence, or in any desired plural number insequence, in like manner, bring them into posit-ion to close theelectric heating circuit through such rivets, heat them and thereafterautomatically eject them from the machine or apparatus, and thensimultaneously and automatically bring,l another fresh rivet or rivetsinto position to be heated to be within the broad scope and purview ot'my invention or inventions as set forth in the claims hereof.

Neither do I intend in the broad claims hereof, to limit n'iyselt to anyparticular number of such carriers or carrier-plates, nor to anyparticular construction, combination or arrangen'xent oit the variousparts making up and comprising` my said ew and improved automatic rivetheating` machine and apparatus herein shown; and itV is evident thatmany various changes in the construction, or oit' the combination andarrallgement of the various elements and parts making up and coniprisingsaid apil'iaratus, may be made by any sltilled mechanician, without inany manner departing from the broad scope ot' my invention.

It is highly essential, especially ior use by the general contractor@Iin such arts as the erection olf structural steel buildings, bridges,etc., that some means should be provided for quickly and easily varyingthe width of the ri vet-carrying slots l@ l'or use in heating` rivetso'lt widely variant diameters; and to this end I have devised theadjustable mechanism 'hown in detail in Fig. 7 which comprises aslotvarying plate 50 contoured at the inner side 5l to the outer edge otthe inner slot and contoured at its outer edge at 5l to the inner edgeof the outer slot coincident in axial line with such inner slot. Suchslot varying plate 50, tor the salte of lightness and cheapness, is dropYforged or otherwise formed trom thin sheet-steel or other suitablemetal, and is preferably providedy withthe inner and they( outerdepending 'flanges lg and 513, shown in dotted lines in Fig. 7, whichended down into the inner or outer rivet .carrying slots sutlicientlyfar to hold the rivets upright iu the :lot whatever their diameter, suchllanges being preferably integral, and at their unction point ittinginto a suitable shaped top-cavity iti il'ormed in the upper face oli thecarrier-plate. This plate 50, 'tor purposes ot adjustment is providedwith a longitdinal seniiarircular or segmental adjusting-slot struck'troni tl 'i axial center ot the spider carrier-plate in which arelocated one or more (preferably two as shown in Fig. i) securinioscrew-bolts 58 and lt preferably with driver slotted heads, screwinginto the carri r-plate- As shown in Fig. i', the plate 50 is in itsextreme right hand position with the rivet-plato rearniost, and it willbe seen that when shifted baclo ward toward the leit't of such Fig. 7,until the securing screw is at the extreme right hand end ol the slot52, indicated by 53', this will widen both the outer peripheral and theinner spider rivet heating-slots in the same degree to the full diameterpossible, or to any minute graduations in be tween.

inasmuch as in some eases it may be desired to have rivets or stock otditlerent diameters carried in the inner and outer immediately adjacentcarrier-slots; in such case the plat-e 5() is usually separated into twoparti: along the curved line one Oil Fig. i', passingl through theconter oli the adjusting-slot 52, and in such case, by using se- ;rinjscrews and oel, with heads ot considerable dian'ioter, both plateswhatever their position, may ce held securely in place without dangeret' accidental displaf-emeut, as but little strain is ever broughtthereon; or each halt of such plate may be provided with a .separatecurved slot 52, as may be desired.

In some cases, and :tor certain purposes, it may be extremely desirablethat rivets or other stoel; ol 'liilierent diameters, or lengths, andconsetpiently (as electric resistance is dependen'` upon requiring'currents ot dill/rent alnperapf to bring;- thein to just the requiredstate ot worling plfuiticity witl.- out danger of over-heating.

Y rind it will be seen that two or more stool-1 pieces reduiriug;heating currents oit diilierent amperaiges, though carried by the sainecarrier late` may be simultaneously heated and delivered by eliminating'the elcetro-conductive bridge member by dividing; it into two separateelectrodes, a and b, as indicated by the dotted lines titl, SO on thebridgemember I5 of the diagram oit Fig. tlandicounecting each separatelyin circuit with one pole ot one oit the secondari.' coils ot the tyie otuniversally if'ariable t-"i1is;toiiiier shown .in such 'o' S, andconnecting in lil-:e manner each electrodes 230 with the opper es of thesame two separate and disfariable secennary coils of the same Litansieormer. But in such case, if each of 1gru) the two carrier-platesis to carry say, two rivets other stock-pieces, eachV requiring acurrent ot a different amperage, in that case, the transform-er T, whilehaving but one variable primary coil, has one variable secondary coiltor each dii'i'erent amper-age currt-:ntl required. find it will be seenthat with a transformer ot the universally variable type shown, that ina rotary stock-carrier machine ot the type shown, having two rotarycarrier-plates each simultaneously heating two riv-ets etc., and havingmy two part slot-adjusting plates 50 combined with a universal primaryand secondary transformer having one central magnetic core leg, carryingthe variable primary coil and tour exterior magnetic core legs, eachcarrying a variable secondary coil, that four rivets or other stock,each of a. different mass, and consequently different electricconductivity requiring tour currents each of different amperage, tobring them generally to proper Working plastic heat may besimultaneously delivered, in proper -.vorliing plastie condition.

And by this arrangen'ient, it will be seen that rivets ot' widelyvarying dia 'meters and lengths may be at the same or ditierent times,heated in such apparatus or machines by varying the heating currentsupplied to the electrodes ot cach carrier b v using the particular formoi universal variable transformer hereinbeforc described, and the otherhcreinbeloro enumerated mechanism; and this'also, without the slightest;danger of over-heating; and consequently deterioration of such rivets orstock by burning', scaling etc. But. while such curved slotted doubleadjusting plate shown is the device for varying the width of the rivetcarrying` slots. which l preferably use, it is evident that otherdevices may be used 'for such purposes in place thereof, and in thebroad Vclaims hereof relating thereto, l do not intend to in any mannerlimit myself to such form of plate; but intend to cover and include inErich broad claims designated thereto, any device tor so varying thewidth ot rivet or stoel; carrying-slots, in a movable carrier of anyterm, in any form ot electric stock heating machines. Y

By the words rivet or rivets, article or articles, stock orstock-pieces, when used in the description or claims hereof, l intend tocover and include not alone headed rivets or bolts etc, butalsofunheaded, or any other work or bodies, such as small articles orpieces ot stock, to which the broad principle ot' my said method, and my.said automatic heating apparatus may be adapted and used, 'tor anypurpose, such as stamping, swaging, forging, or in any othermannerchanging the shape thereof, while in a plastic heated condition,my said apparatus may with ii'nmaterial changes therein be madeadaptable to an almost innumerable number ot such uses with stoel; orarticles desired to be contoured to any shape, without in any mannerdeparting 'trom the scope of my said invention or inventions hereinfirst disclosed and claimed.

And inasmuch as several individual portions of the mechanism hereinclaimed individually, are applicable to be used in automatic feeding anddelivering machines other than electric heating machines, l `do notintend to limit myself in the broader claims hereof, strictly to usethereof in such type of machines, as it is evident that my improvedslotted circular carrier-plates with axially and peripherally holding,and delivering slots, especially when coupled with my combinedstock-guard and ejector member, as well as my adjustable slot-plates torvarying the widths ot each individual carrier-slot are each and allgenerally and combined adaptable tor use in any and all machines,electric-heating or non-electric-heating', where automatic feed anddelivery is desirable; and in the broad claims hercoi' relating` to suchmechanisms immediately above enumerated, l intend to claim suchmechanisms both individually and collectively, vhen applied to and usedin automatically feeding and delivering machines for every name andnature, wherever such mech nisms, singly or collectively in combination,are capable ot use therein.

l claim- 1. ln a device ot the class described, a moving carrier-memberhaving a plurality of rivet carrying slots open ended their rearencsrelative to the direction of movement of the carrier-member tor theejectionot' the he ated rivets; a guide-member located adjacent to themoving carrier-ineniber for preventing accidental removal ot' the rivetsalter insertion in the carrier-slots,` during a step by step,intermittent movement thereof with a dwell tor a predetermined timebetween each two sequential movements, said guide member terminating tothe rear ot" the ejecting position, and means tor automatically ejectingthe rivet or rivets 'trom the cm'rier-meniber upon the lirst partialmovement oi' such carrier-member a'lter the bringing ot the said rivetor rivets sequentially to plastic Working heat.

ln a device ot the class described, a moving carrier-member having` aplurality ot rivet carrying slots open ended their rear ends relative tothe direction ot movement ol the carrier-member for the ejection ot theheated rivets; a guide-member located adjacent to the moving ca1ier-member tor areventine' accideiital removal ot the rivets v D atterinsertion in the carrier-slots, during a step by step, intermittentmovement thereoli with a dwell for a predetermined time between eachmovement, said guide member llt) terminating to the rear of the ejectingpositien, nieenil vfor automatically ejecting;` the rivet or rivett1troni 'he carrier-inemliiei upon the irfit partiel movement oi suchcarrierinunber after the bringing ot the rivet or ri ete sequentially toplaetic wlnliing heat; und incline or inechanieni 'tor simultaneously:nitolnatically bring-inge,` a fresh rivet or rivets toheetinggpeeition.

Il. i ice of the character describe4 moving carrier adapted to receive arality Ol' articles be eequentially heated; an elett c heating currentenpply; n plurality 0i movable eleclrodee; a bri ging electr-ejconductor nieniber alla`L ted to "ic-rin closed electric-circuit throigharticlesy 'to he heated'ivhen the i trodee by their movement bringsluch'aiii` clee into contact with therbridgii L, electroF conductiveIneinher, wit a dwell ennicient to bring such anclcs to the properworkingheut; means or niechani in for automatically intermittentlyinoviui; lli ier; and means il'or autonnitically ejcc" iticlcs when theyhave been heated to the required working teinperaturee.

i- In L device oi the chai-z a moving carrier adapted to rality ofartieleS to be seque an electric lieatii'ig,` current imply: a pluralityoi1 inovablc electrodes; a cridging clec tro-conductor ineinlier adaptedto torni a closed electrician-cui t through a plurality ot the articlesto be heated when tl movable electrodes by their nioveinent bring eucharticlesf)` into contact with the bridging,I eiectro-conductivenieniber, with a dwell eu'li'icient to bringl Such articee to the properr deecribcd, a pluhealed;

vfm'ling-lieat; the current passing thru one movable electrode thru onearticle 'to the bridge-uieinher, thru which it paeece in fiericeI thruanother article to Second nievable electrode, and thence to the minus(n) pole of the electric heating current supply; ineans or niechaiiienifor automatically intermittently inovini the carrier; and ineane forautomatically ejecting, the articles when they have been heated to therequired Werl:- :ingv teinperaturefs.

5. A device ot the clase described, coniprieing a moving carrierlniving; a plurality et stoclecarrying l slots open one end to deliverthe stoel; when heated to pleeticity; and adjustable ine-ans 'l'orvarying the width o'l each ot Such Slots 'tor use with Stoch oitdiiiierent einen or diameters.

I1 device of the clase describe( coinprieing` u. substantially circularintermittently rotatingv carrienplate having' a Spider openvforliportion surrounding` the huh; :i plurality oi.E curved StoclrfcarryingSlots open at the `peripheinl end; a plurality of like slots opening,vinto the c-rilicee oit the Spider; and an adjustable ineinber 'forindividually varying,l the Width of each adjacent pair of inner andouter slots, in such inanner as to :adapt the Seine to holding thereinStock oil diii'ereut sizes or dieinetere.

7. A device ot the clase described, coniprieingl a eu tantially circularinterinittent` ly rotzting carrier-plate having a spider open-wornportion eurrounding the hub; a plurality elf curved stock4::i1'z5yf'ii'igeliile open at the peripheral end; a plurality ot' likeslots opening,I into the oriliee-i ot the `epider; and anadjustable-member ior varying the v.'id'th oi' each iuljacent pair ot'inner und outer slots, concaved on the inner side to the contour oi" thecurved outer Wall-face ot the inner spider-slots, and on the outer eideconvened the contour oil the inner Wallface ci the outer peripheralslots; und ineans for securing such zuljustable ineuiber er ineinbez-sin any required position.

8. A, device oiE the class described, com` prieing a fnihstuntiallycircular intermittently rotating carrier-plate having a spider`:pen-work portion surrounding the hub; a

plurality oi' curved stock carrying slots open at the peripheral end, aplurality of like Slots openinn' into the orilices of the Spider, and anadjuetable-ineinber or nieinbers ior varying the width ot' each adjacentpair ot' inner and outer slots, eoncaved on the inncr eide to thecontour 0i" the curved outer- \vall'lface olj the inner spider-slots;and on the outer Side couver-:ed to the contour of the inner frail-:taceot the outer periplicral slots; and ineane for eecurinw such adjustableincinber or Inen'ibers in any required poeition, in euch nianner as toadapt the Sau/1e. to holding therein stocke oili ditlcreut sizes ordian'ieters.

9, A (flevice of the claus described, coniprising a Substantiall ycircular interinittently rotating cari'iei--jLilate having a spideropen-work portion surrounding the hub; a plurality of curved Steel;carrying slots open at the peripheral end; a plurality ot like slotsopening into the orifices ot the spider; and an adjustableeineinber iorvarying the Width ol each adiacent pair of inner and outer elote,concaved on the inner side to the contour ot the curved outer wall-'taceof the inner spider-elots, and on the outer side convexed to the contourof the inner Wall- 'face ot' the outer peripheral Slots; and ineens 'torsecuring such adjustable ineinber in any required position in suchmanner as to adapt the Slots to hold therein stocke of dilierent'lianieters, Such adjustable members coinprieing,` a curved-slot orslots, and Securing means located on such slot, und screwing into thecarrier-plete.

it). A device of nrizrirf CIJ lll-5 lll) and an adjustable-member torvarying the width oi' each adjacent pair of inner' and outer slots,(split into two parte along` the line of its curved path ot adjustment,whereby the inner slot may be made ot one width, and the outer oitanother) concavcd on the inner side to the contour ot the curved outerwalldfaces oitl the inner spider-slots; and on the outer side convexedto the contour or the inner wall-tace oit the outer peripheral slots;and means ior securing such adjustable member in any required positionin such manner as to adapt the slots to hold therein stocks et dilierentdiameters, such adjustable members comprising a curved slot or slots,and securine means located in such slot, and screwing into thecarrier-plate.

11. .fr ilevice o'j the class described, comi prising a plurality oitsubstantially circular stock eai.'rying-plates having stock-carryingslots open toward the anis, and other like stoclecarrying and deliveringslots opening at the periphery; and n'icehanism tor automaticallyintermittently rotating such stoclecarrying plates by a step by stepmovement, with a predetermined timed working dwell between movements.

12. il device or' the class described, comprising a plurality olsubstantially circular stock carrying-plates having steelt-carryingslots open toward the axis, and other like stock-carrying and deliveringslots opening at the periphery; and mechanism tor' automaticallyintermittently rotating such carrying-plates by .a step by step movementwith a predetern'iined timed working dwell between movements; in suchmanner that the adjacent. abutting` edges or cach pair of wheels movetoward the trout olf the niachine, whereby the empty stock-carryingslots to be supplied with tresh stock are tound at or adjacent to theextreme front of the. machine. Y

123. A. device ot the class described, comprising a plurality o'tsubstantially circular stock-carrying plates having stock-carrying anddelivering slots open toward the axis, and other like stock-carrying anddelivering slots opening at the peripl'icry; and mechanism 'torautomatically intern'iittently rotating such stoel?earryin g` plaies bya step Vby step movement with a predeleri'nined timed working dwellbetween movements; in such manner that the adjacent abutting edges oteach pair ol wheel-like caimiew plates move toward the front ot the machine, whereby the empty stock-carrying slots to be supplied with freshstoclr are found at or adjacent to the extreme front of the machine; thetwo wheels rotating alternately so that when one is in the heatingdwell, the other is in rotative movement.

14:. A device of the class described, comprising a plurality or'substantially circular steelt-carrying plates having Stock-carrying anddelivering slots open toward the axis; and other like stock-carrying`and delivering slots, opening at the periphery; the open ends olf theslots being at the rear relative to the direction -o't movement ot saidplates, and mechanism ior automatically intermittently rotating suchstock-carrying plates by a step by step movement with a predeterminedtimed working dwell between move ments.

15. ln a rivet heater, a clamp comprising upper and lower rivet engagingelectrodes, and a disl; rotatable upon a vertical aXi said diskbeingpositioned with a peripheral portion between said electrodes andhaving a plurality or rivet receiving notches in the periphery thereof.

16. ln a rivet heater, clamp comprisingrivet engaging electrodes, arotatable disk having a peripheral portion positioned between saidelectrodes anu having means adjacent its periphery supportine aplurality oi rivets, and means 'for simultaneously openingsaiil clampand imparting a rota tive movement to said dish.

17. ,ln a rivet heater, a clamp comprising a stationary and a movableelectrode, a rotatably mounted disl; having a peripheral portionpositioned between said electrodes and having means adjacent itsperiphery Jror supporting` a series of rivets, means for opening theclamp and means operably connected to said clamp for imparting a step bystep motion to said disk.

18. A rivet heater comprising a pair ot clznnping electrodes, one otsaid electrodes being movable toward and from the other, a spring forpressing said movable electrode toward the opposing electrode, a levercon-- nected to said movable electrode 'for moving said electrode away`from the opposing electrede, and a rivet feeding mechanism opern ablyconnected to said lever to feed a rivet into position between theelectrodes upon operation ot said lever.

19. lin a rivet heater, a clamp comprising a pair of opposed electrodes,means 'for operating said clamp, a magazine tor holding a plurality otrivets and means operably connected to said clamp operating means tortransferring rivets trom said magazine to a position between saidelectrodes.

20. ln a rivet heater, a clamp comprising pair ot opposed electrodes, arivet magazine, and means tor opening said clamp and 'for transferringrivets Yfrom the magazine to the clamp.

21. lfn a rivet heater, a clamp comprising a pair clamping electrodes,one or" said electrodes being movable toward and from the other, asupport for supporting rivet by its head, means for actuating saidsupport to feed a rivet into position between said electrodes, and meansfor moving said movable electrode into engagement With the ill lower endof the rivet to press the head of the rivet into engagement with theother electrode,

22. In a rivet heater, a clamp comprising' a pair ot clampingelectrodes, one of said electrodes being movable toward and from theother, a support i'or a rivet with its ends exposed, means for actuatingsaid support to feed a rivet into position between said electrodes, andmeans 'tor moving' said movable electrode into engagement with one endot the rivet and to actuate said rivet to press the other end oi saidrivet into engagement with the other electrode.

23. In a rivet heater, a magazine for rivets, means ii'or aetnating saidmagazine in one direction to position the rivet to be heated in axialalinement with its heating position, and means for elampingythe rivet inits heating position.

2li. In a rivet heater, a magazine ior rivets, a pair ot opposedelectrodes, means 'tor actuating said magin'zine in one direct-ion toposition the rivet to be heated in axial alinement with its heatingposition in Contact with said electrodes, and moans ior clamping therivet in engagen'ient with said elec-- trodes in its heating position.

25. In a rivet heater having` a heating position for a rivet, a magazinefor rivets, means for actuating said magazine in one direction toposition the rivet to be heated in alinement with its heating positionpreparatory to being positioned in its heating position, and a movablemember for anchoring' the member to be heated in heating' position.

2G. In a rivet heater having a heating position for a rivet to beheated, a magazine ior rivets, a pair o1" opposed electrodes, and meansYtor actuating;` said magazine in one direction lo position the rivet tobe hea.o l in alinement with its heating; position. the magazineeonstitnt'ng; a guide to guide the rivet during` its movement intoheating position.

27. In a rivet heater having' a heating; po` sition tor a rivet to beheated, a n'nrfgazine tor rivets, a pair ol" opposed electrodes, moansi'or actuating said magazine in one direction to position the rivet ii,be heated in alinement with its heating; position, the magazine('oi'istitnting a rinde to raide the rivet during its movement intoheating; pi tion, and a movable member iior elan'ipinoj the member to beheated in the heating;1 pi tion. i i

Q8. In a rivet heater, a clamp comprising;- a pair ot electrodes, one otsaid electrodes heingr movable toward and from the other, a support fora rivet, means for aetnatinn' s: 'ffl support to feed a rivet intoalinement wit said electrodes, and a spring' operatively om neeted toactnate said movable electrode to clamp the alined rivet between saidpair ot' electrodes.

29. In a rivet heater, a Clamp comprising a pair oi" el etrodesq one.oiE said eloetroees being; movable towarn and iioin the other, a supporttor a rivet. a spring Yfor moving` the movable electrode into heatingvposition, a lever operatively connected to said movable electrode, andmeans tor actnating said support to 'toed a rivet into alinfiment withsain electrodes and tor actuating said lever to withdraw said movableelectrode ont of heating; position.

30. In a rivet heatn'. a clamp ooinprisingiA a pair oit electrodes, oneot said elmtroder-i being' movable toward and from the other, a support'for a rivet with its ends exposed. a springV operativelv connected tosaid niov able electrode, lever operatively connected to aait-L novahleeleetrofe, and means Ytor at tinitinA` said snpport toy tend a rivetinto :'-lineinmt with irl. eleetrodesand tor s hseqnentlv actuating'said lever to withdraw said n'iovable elontrode ont of heating posi`tion. the sprang' lveing operable to act at'e the movable electrode intoone rement with onY` end of the rivet to he heated and ino *in the rivetinto its heating' position in engagement with the other electrode.

31. In a rivet heater,y a rotatable rivet hol( ing means ifo r snpportin1' the rivets with thei ei s exposed, a pair ot' opposed olertrodes,means for advancing' said rivet holrl inn; n'ieans at intervalssneeessivel'v to present the exposed ends ot tinn rivets into Contactwith the eleetrodes tor heatii and rfnans tor Ciampino; the exposed endsoi the rivet@1 into enlnaemont with said eleetrodes to hf heated.

3Q. In an eleetrie heater` the combination with a rotatable `workholdin;Y means' 'tor snini'iortinggj the work to he olortrif-allv heatodoi" a pair o'i" opposed electrodos.. inearn: for rotating' said workholding means al intervals snerossivelv to i'n'esont the work to h'xheated to the oleetrodes and nieans for clainivino' exiionod portions olsnrh work in direct ei'iaapjennnt with said elortrodrs to he hrated.

33. In a rivet liraler coniprisinf." a pair ol ,lnnning electrodes, arivet 'temlinar inechai ana Ytor operatinf" raid 'lnedinjr mechanism at.intervals snee: ivelv to nresent the rivets to the electrodo forheatnn` Ricans for nornrllv.cansino .said el-ff'i'i-orlef, to appz-michone another and elanipinglv rn- ;ran'e ih" exposed onda out a rivet. andmeans awingv said olor:-

c he ted rivet and the rei-,en sneceedinn' rivet.

GEGRGE A. E. JONES

